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Highly dispersed platinum honeycomb reforming catalysts: Sintering behavior and activity

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Abstract

The influence of chlorine regulation by steam treatment and of operation conditions in the dehydrogenation of methylcyclohexane (MCH) on the dispersity of chlorided Pt/γ-Al2O3 honeycomb catalysts has been investigated by means of transmission electron microscopy (TEM). The loss of surface chlorine greatly promotes the sintering of small Pt crystallites (<20 Å), while the reaction testing does not affect the high dispersities of the catalysts. An original evidence of the antipathetic structure sensitive character for the dehydrogenation of MCH on highly dispersed Pt catalyst is provided.

Abstract

Просвечивающей электронной микроскопией исследуется влияние регулирования хлора обработкой водяным паром и операционными условиями при дегидрировании метилциклогексана на диспергирование хлорированных Pt/γ-Al2O3 сотовых катализаторов. Отсутствие поверхностного хлора сильно способствует спеканию малых кристаллитов Pt (<20 Å), тогда как испытание в условиях реакции не влияет на высокую дисперсность катализаторов.

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Author notes

  1. P. Tsiakaras

    Present address: Institute of Chemical Engineering and High Temperature Chemical Processes, Department of Chemical Engineering, University of Patras, GR-26110, Patras, Greece

Authors and Affiliations

  1. Istituto CNR-TAE, Salita S. Lucia 39, 98126, S. Lucia, Messina, Italy

    F. Frusteri, A. Mezzapica, P. Tsiakaras & N. Giordano

  2. Dipartimento di Chimica Industriale, Università degli Studi di Messina C.P. 29, 98166, S. Agata, Messina, Italy

    A. Parmaliana

  3. Institute of Catalysis, Prospekt Akademika Lavrentieva 5, 630090, Novosibirsk 90, Russia

    A. L. Chuvilin

Authors
  1. F. Frusteri
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  2. A. Parmaliana
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  3. A. Mezzapica
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  4. A. L. Chuvilin
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  5. P. Tsiakaras
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  6. N. Giordano
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Frusteri, F., Parmaliana, A., Mezzapica, A. et al. Highly dispersed platinum honeycomb reforming catalysts: Sintering behavior and activity. React Kinet Catal Lett 48, 315–323 (1992). https://doi.org/10.1007/BF02070102

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  • DOI: https://doi.org/10.1007/BF02070102

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